JPS59193695A - Emergency priority circuit system - Google Patents

Abstract

PURPOSE:To inhibit a communication with another load when an accident occurs to some load, and recognize the trouble load on a center control board by sending a parallel address signal from the center control board, and setting the center control board and loads in 1:1 proportion. CONSTITUTION:An emergency priority circuit system is provided with the center control board 5, and plural loads 6a-6n are connected to the control board 5 through power lines (i) and (j), an I/O line (h), and address lines (l), (m), and (n) in 1:1 proportion to control and monitor the loads 6a-6n by the control board 5. A sensor 8 which senses abnormality, and a relay 9 and a relay contact 10 are provided to the power source lines (i) and (q) of those loads 6a-6n, and the circuit consisting of a transistor 12, dip switch 13, diodes 11 and 17-19, etc., is provided between said abnormality sensing circuit and an I/O line (r) and address lines (s)-(u). If an accident occurs to some of the loads 6a-6n, communications with other loads are inhibited to recognize the trouble load on the control board 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that remotely controls air conditioning, lighting, or various sensors in buildings, factories, etc., which includes a central control panel that performs centralized monitoring and centralized operation, and various terminal devices. Regarding the communication method between 611J and 611J using parallel signals, more specifically, if an abnormality occurs in any 611J terminal device, communication between the central control panel and other terminal devices is prohibited, and the terminal device is Concerning an emergency priority circuit system that allows the central control panel to recognize the

In large buildings such as buildings and factories, it is common practice to centrally monitor air conditioning, lighting, and various load operations in a central monitoring room.

However, the conventional method uses two-wire serial signals, and each terminal device is monitored and operated in sequence. That is, in FIG. 1, the central control panel 1 and the terminal devices 2a, 2b, . . . 2n are connected by a two-wire signal line 3, and each terminal device 2a, 2b, .
For example, various loads 4a, 4b, . . . , 4n such as an air conditioner, lighting, or temperature and humidity sensors are connected.

- the force control signal is sent as a serial signal in binary code from the central control board l via the signal line 3, and several channels determined by the address signal are set;
For example, three loads can be controlled in each channel.

As shown in FIG. 1, each terminal device 2a, 2b...
2n, if three loads 4 are controlled each, a terminal device is selected by the address signal. For example, if the channel number of the terminal device 2a is 2, and the address signal is formed with 6 bits, it is expressed as "000010" in the high order code.Similarly, the channel number of the terminal device 2b is 1.
If it is 5, the address signal 001111'' is sent (if it is 8, α::ll terminal device 2b will be selected.

Furthermore, as a load control signal, it is “1” when the load is on (ON), and “o” when it is off (7).
” It is expressed in binary code of 1 pip 1-,
The overall control signal consists of a time-division code of various types, including an address signal as shown in FIG. 2, followed by a load control signal, etc.

In the figure, a is the star 1-pulse, b is the star i-pulse for the address signal, and C is the address, which here represents the second channel, and the 11f:l floor device 2a is selected. d is a parity check for the address signal C, which is an odd parity. e is the star 1-pulse for the load control signal, f is the load control signal,
Here, one of the loads is on and the other two are off. At g, a parity check is performed for the load control signal f, and 11 represents a monitoring signal for receiving and monitoring the operation of the load with respect to the load control signal f.

When this series of transmission of control signals for a certain channel is completed, it continues to transmit control signals of the next channel. For example, if the address signal is 6 hints west, control signals of 64 channels are transmitted in sequence, and when it is completed, , return to the first channel again.

In this way, according to the conventional remote control method using serial signals, since there are two signal lines 3, only a small amount of wire is required.
...If an accident occurs in 4n, there is a possibility that notification to the central control panel 1 will be delayed. That is, even if an accident occurs in the terminal device 2n-1 immediately before the central control panel 1 and a certain terminal device 2n while communicating between the central control panel 1 and a certain terminal device 2n, the communication will go around each θ115 terminal device, The terminal device 2n-
It is impossible for the central control panel 1 to recognize that an accident has occurred until the address breach occurs once again in the central control panel 1.

In order to shorten the time required for recognition as much as possible, the scanning speed circulating through each terminal device 2a, 2b, . There are also limits to scanning speed.

Furthermore, according to the conventional method, since the control signal from the central control panel 1 is a serial signal, each terminal device 2a, 2b, .
・2n requires a microcomputer to convert to parallel signals and a memory to store the data content, and it also requires a power supply circuit and hardware, making it extremely expensive. It had become a thing.

The emergency priority circuit system according to the present invention is intended to solve the above-mentioned problems.
The trace signals are parallel, and the correspondence between the central control panel and the loads is 1:1, and if an accident occurs in one of the loads, communication with other loads is prohibited, and the accident
i can be immediately recognized by the central control panel.

Next, how the emergency priority circuit system according to the present invention is actually implemented will be explained using an example. FIG. 3 is a diagram showing the concept of the emergency priority circuit system according to the present invention, where 5 indicates each load 6.
A, 6b...6n is a central control panel that controls and monitors each load 6a, 6b...6n from the central control panel 5.
They are connected in parallel to power lines i and j for supplying power to the terminals, to an I10 line for controlling transmission and reception, and to address lines 1m and n for selecting a target load. Although three address lines], mXn are shown in this example, the number is determined depending on the number of loads 6a, 6b, . . . , 6n. That is, the loads 6a, 6b, . . . , 6n each have a unique address number in binary code, and if there are three address lines, "o o o"
A maximum of 8 loads can be selected from '' to 111'', and if the number of address lines is increased to 6, 53 loads can be selected in the same way.

Each of the loads 6a, 6b...6n is commonly supplied with a 71i source through power lines i and j, and for example "010" is supplied from the central control panel 5 to the 7 trace lines l, m, n.
” is output, the corresponding load, for example load 6a, is selected.

At this time, depending on the state of line 110, mode 1 switching between transmission and reception on the central control panel 5 is performed.

As shown in Figure 4, if the I10 line k is at H level, the central control panel 5 is in reception mode from the load 6a.
If it is at L level, it becomes a transmission mode from the central control panel 5 to the load 6;

Assume that an abnormality occurs in the load 6n during normal communication between the central control panel 5 and the load 6a.

Then, the I10 line 1 is output as an abnormal signal from the load 6n.
(Outputs a signal at a level exceeding the II level.

Therefore, since an E level signal is superimposed on the signal from the central control board 5 on the I10 line, the central control board 5 detects it and outputs "0] 0" on the Alres line. Open l, m, and n. E
A circuit for detecting level signals can be easily realized by using a level comparator or the like.

On the other hand, the abnormal character occurrence signal is outputted from the abnormal load 6n to the I10 line, and at the same time, the address number of the abnormal load 6n, for example, "11" is output on the address lines I, m, and n.
0'' is output and identified by the central control panel 5 to confirm the abnormal load 6n.

Fig. 5 shows an embodiment of a circuit that outputs the address number of the abnormal load when an abnormality occurs, where 7 is the central control panel, p and q are the power lines, r is the I10 line, and s
, t, and u are address lines.

8 is a sensor that detects an abnormality, and closes its contact when an abnormality is detected. Then, a voltage, for example 24V, supplied from the power lines p and q is applied to both ends of the relay 9, driving the relay 9 to close its contacts 10. Therefore, the 24V voltage supplied from the power lines p and q is output to the I10 line r via the diode -1°-11. If you set the 11 level for transmission and reception switching to about 12V, the abnormal signal 2 on the central control panel 7
4V can be sufficiently distinguished. Diode 1 is I1 when no abnormality occurs in the load.
This is to prevent backflow from the 0 line r.

Each time the contact 10 closes, the transistor 12
4 also pass. A dip switch 13 is connected to the emitter of the transistor I2, and the address number of the negative i:i is set in binary code.

For example, if the address number is "'110", if contacts 14, 15, and 16 of the dip switch 13 are closed, closed, and opened, "'110" will be output on the address lines S, t, and u, respectively. Ru. Diode I7, I
Similarly to the diode 11, 8 and 19 are for preventing backflow from the address lines s, t, and u.

When the central control board 7 detects 24V, which is an abnormal signal on the I10 line r, it prohibits the output of address signals from the central control board 7 to the address lines S, t, and u, and outputs them from the abnormal load. The address number sent is received. In this example, since the address number "110" is output on the address lines s, t, and U, an abnormality has occurred in the load corresponding to the address number "i to" in the central control board 7. Recognize that.

In this embodiment, the abnormality occurrence signal is sent to the I10 line r.
Although the signal is output superimposed on the transmission/reception switching control signal, it goes without saying that the emergency priority circuit system according to the present invention can be formed by adding a line dedicated to the abnormality occurrence signal. In that case, the level of the abnormality occurrence signal can be set arbitrarily regardless of the H level of the transmission/reception switching signal.

As explained above, according to the emergency priority circuit system according to the present invention, since the central 1nll board and each load can correspond 1:1 using parallel signals, if an abnormality occurs in any load, it can be immediately detected. It becomes possible to notify the central control panel of the occurrence of an abnormality, eliminating the time delay caused by the conventional non-realistic method. In addition, although there is some 1-amplifier due to the increase in the number of signal lines due to the parallel method, the expensive 1-shield 11" 11-end W; 1γ or , the total cost can be significantly reduced.Furthermore, unlike the serial method, there is no need to serialize each negative i; It can be configured with only ζ, which greatly improves reliability.

[Brief explanation of the drawing]

Fig. 1 is a diagram illustrating a remote device using the conventional Norial method, Fig. 2 is a diagram showing an example of a serial signal, Fig. 3 is a diagram showing an emergency priority circuit according to the present invention, and Fig. 4 is a diagram showing an example of a serial signal. Figure 5 is a diagram explaining the transmission/reception switching signal train and the level of the abnormality occurrence signal on the I10 line, and Figure 5 shows the circuit that outputs the abnormality occurrence signal when an abnormality occurs and the address number of the abnormality load. It is a figure showing an example. In the figure, ■ is the central control panel, 2a, 2b...21)
is the terminal device, 4a, 4b...4n is the load, 5 is the central control panel, Ga, 6b-6n is the load, i, j are the power lines, h is the I10 line, l, rn, n are the addresses Line, 7 is central control panel, 8 is sensor, 9 is relay, 10
Reference numeral 12 indicates a relay contact, 12 indicates an I/Run system, and 13 indicates a dip switch.

Claims (1)

[Claims] Central control panel and multiple 5i's with unique address numbers
In a remote control device that is composed of IL terminal devices, and any terminal device can be selected by parallel signals from the central control panel, an emergency signal is sent from the terminal device in which the abnormality has occurred, and a unique address number is sent to the remote control device. An emergency priority circuit system that is characterized in that the central control panel prohibits transmission and reception from other terminal devices by outputting on the line, and makes the abnormal terminal device recognized.